18.19. Writing to Standard Output18.19.2. SolutionUse echo or print: print "Where did my pastrami sandwich go?"; echo "It went into my stomach."; 18.19.3. DiscussionWhile print( ) is a function, echo is a language construct. This means that print( ) returns a value, while echo doesn't. You can include print( ) but not echo in larger expressions: // this is OK (12 == $status) ? print 'Status is good' : error_log('Problem with status!'); // this gives a parse error (12 == $status) ? echo 'Status is good' : error_log('Problem with status!'); Use php://stdout as the filename if you're using the file functions: $fh = fopen('php://stdout','w') or die($php_errormsg); Writing to standard output via a file handle instead of simply with print( ) or echo is useful if you need to abstract where your output goes, or if you need to print to standard output at the same time as writing to a file. See Section 18.20 for details. You can also write to standard error by opening php://stderr: $fh = fopen('php://stderr','w'); 18.19.4. See AlsoSection 18.20 for writing to many filehandles simultaneously; documentation on echo at http://www.php.net/echo and on print( ) at http://www.php.net/print. Copyright © 2003 O'Reilly & Associates. All rights reserved. |
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